Final answer:
The amount of the sales tax for The Lock Shoppe's sales of Tk.14,850 at a rate of 4.5% is Tk.667.25. The total sales, including the tax, is Tk.15,517.25.
Step-by-step explanation:
To calculate the amount of sales tax, we need to convert the percentage to a decimal. The Lock Shoppe had sales of Tk.14,850 with a sales tax of 4.5%, which we convert to 0.045 in decimal form. Multiplying the sales by the tax rate gives us the sales tax amount:
Tk.14,850 x 0.045 = Tk.667.25
Therefore, the amount of the sales tax is Tk.667.25 (option a).
Next, we calculate the total sales including the tax by adding the original sales amount to the calculated sales tax:
Tk.14,850 + Tk.667.25 = Tk.15,517.25
Thus, the total sales, including the tax, is Tk.15,517.25 (option a).